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Highly stable phosphinate based flame retardant for polyamides

Exolit® OP 1400 Terra

Exolit OP 1400 Terra is a non-halogenated flame retardant based on organic phosphinates for reinforced polyamide 6, polyamide 66 and high temperature polyamides. The product achieves its flame retardant effect through a combined gas phase and condensed phase mode of action. 

Exolit OP 1400 Terra is chemically and from its composition equivalent to Exolit OP 1400, but comes with a mass balance certificate as for its production, renewable based Ethylene was sourced. 

Therefore we assume that for Exolit OP Terra products no additional performance testing and qualification compared to the standard grade are necessary.

 For more details see our Innovation Spotlight video.   

  • Outstanding thermal stability - widest processing window within Exolit OP product range for polyamides
  • UL 94V-0 rating down to 0.4 mm thickness
  • The flame retardant polyamide compounds exihibt very good physical and excellent electrical properties
  • Low material density
  • Good colorability
  • Good contrast in laser marking
  • Non-halogenated flame retardants with favorable environmental and health profile
  • Shows a high-potential for mechanical recycling while maintaining the flame retardancy and other properties.Renewable resources are non-food competing
  • Usage of renewable raw material is certified by supplier following the mass balance principle.
For regulatory details such as the classification and labelling as dangerous substances or goods please refer to our corresponding Material Safety Data Sheet. For disposal in accordance with the regulations the product should be treated as special waste and taken to a suitable incineration plant.  
       Test method
Phosphorus  (w/w) 24.5-25.5 Photometry after oxidizing dissolution; (11/17)  or wavelength dispersive X-ray fluorescence spectrometry; (11/23)
Moisture content (IR lamp) % (by wt.) max. 0.5  Karl-Fischer titration; (11/21)
Decomposition temperature
°C 350 (DTA/TG 2% weight loss, air)
Density at 20°C g/cm3 approx. 1.45  
Bulk Density kg/m3 approx. 466  (DIN 53466)
 Exolit OP 1400 Terra was developed especially for use in polyamides. It is suited for polyamide 6 and 66 as well as polyphthalamides and other high temperature polyamides, e.g. PA 46, for both glass-fiber-reinforced and unreinforced grades. The flame retarded polyamide compounds exhibit very good physical and electrical properties. Flame retarded polyamides with Exolit OP 1400 Terra are suitable for applications also in hot and humid environment.
In glass-fiber-reinforced polyamide 6 or 6.6, a dosage of about 20 % (by wt.) of Exolit OP 1400 Terra is usually sufficient to obtain the UL 94 V-0 classification for electrical components (at 1.6 mm down to 0.4 mm thickness). In semi-aromatic polyamides the dosage can be reduced to approx. 15%. Subject to the polymer grade, processing conditions and glass- fibre reinforcement the dosage of the flame retardant may vary.

Before incorporating Exolit OP 1400 Terra, it is important to pre-dry the polyamide as usual. If possible, the resulting moisture content should be below 0.1 % (by wt.). Pre-drying of Exolit OP 1400 Terra is not necessary. However, pre-drying (e.g. 4 h at 120 °C) is recommended, if even very low moisture contents must be avoided. 

The mixing and processing methods customary in powder processing of polymers can be used with Exolit OP 1400 Terra. The VDI Guideline 2263 Prevention of dust fires and dust explosions or the relevant national regulations must be observed.

The optimum conditions for incorporating should be determined in each individual case. Care must be taken to ensure homogeneous dispersion of all components. The temperature of the polymer melt should not exceed 340 °C.

Packaging and Handling
Delivery form


Exolit OP 1400 Terra is delivered in 20 kg paper bags with PE inliner.

StorageFor regulatory details such as the classification and labelling as dangerous substances or goods please refer to our corresponding Material Safety Data Sheet. The product should be stored in tightly closed packaging in a dry place at room temperature.  
Minimum shelf life is 12 months from the date of shipping when stored according to the said conditions.

Products that offer outstanding sustainability advantages are awarded Clariant’s EcoTain® label. EcoTain® products significantly exceed sustainability market standards, have best-in-class performance and contribute overall to sustainability efforts of the company and our customers. Find out more about: EcoTain®.

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